[FS#1346] Procd does not respect a user's groups when using parameter user -- second try

[LEDE Bugs]

The following task is now closed:

FS#1346 - Procd does not respect a user's groups when using parameter user  -- second try
User who did this - john (john)

Reason for closing: Fixed
Additional comments about closing: merged a patch from yousong that fixes the error. it'll be in trunk in the next couple of days.

More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=1346